Now that the terrible Tony Sludge has escaped from prison, it's up to Geronimo Superstilton and the Heromice to defend Muskrat City from the notorious Sewer Rats and stop an enormouse blackout! Will our heroes be able to defeat their enemy without risking their fur?
NOTHING IS IMPOSSIBLE FOR GERONIMO SUPERSTILTON! He helps watch over Muskrat City, ready to fight evil at all costs. He is strong... he is invincible... he is fearless! (Well, almost.) He is one of the Heromice! THE INVISIBLE THIEF The jewelers of Muskrat City are in trouble. A thief has been stealing precious diamonds, and the thief is... invisble! Can the Heromice protect Duchess Marily…
Super Swiss slices! Tony Sludge and the Sewer Rats have invented a new device - a shrink ray that can turn things tiny! Tony has a plan to use it to steal all of Muskrats City's gold. It's up to the Heromice to stop him, but they'd better be careful the Sewer Rats don't turn them into mini-mice first!
Muskrat City has been struck by a giant blackout and it's so dark, no one can see a whisker! A gang of criminal robots is robbing all of the city's jewelry stores, and it's up to Geronimo Superstilton and the Heromice to figure out who's behind the attack. Will our heroes be able to solve the mystery?
Great Gouda! Tony Sludge and the Sewer Rats have turned day into night, and they want the sun to stay away forever! Now it's up to the Heromice and the mysterious new crime fighter Super E to stop them. But can Superstilton and his friends bring daylight back to Muskrat City before it's too late?
Timeless cheese stricks! Professor Maximilian Mousemover just arrived in Muskrat City ... in a time machine! Tony Sludge's great-great -grandfather Butch Sludge is visiting from the past, too, and he's up to no good. The Heromice must travel through time to save the rodents of the past - and the future - from the Sewer Rats.
Geronimo Stiltonoot and his family are off to find to find a cure for Grandma Ratrock's aches and pains. She's heard that a remedy hides in Cheesy-La, a legendary valley that Geronimo isn't even sure exists. Little does he know that getting there will be an adventure among geysers, volcanoes and rivers of molten lava!
A visiting rodent has arrived in Old Mouse City with astounding news. On his recent jouney to a distant land, he spotted a montain ... moving! Holey cheese! Geronimo Stiltonoot sets off on a trip to the ice and snow to find out what lies behind this mystery. It's a fur-raising expedition.
It's time for the Stone Age Games, the annual cavemouse sports competition! This year, the saber-toothed tigers want to enter the games, too, so they call a truce. But when their flag goes missing, Tiger Khan blames the cavemice! Can Geronimo track it down in time to keep his fur intact?
Geronimo Stiltonoot wakes up to a terrible morning. Meteors are falling from the sky, and everyone in Old Mouse City has an awful stomachache! Geronimo must travel to the Cave of Memories to find the ancient shaman cure for his fellow cavemice. But dangers lurk on his journey - can he make it back home safely?